Power transmission coupling



FIG. 1 is a perspective view of a power transmission coupling showing mynew design;

FIG. 2 is a front view thereof, a back view being a mirror imagethereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a cross-sectional view thereof taken along the line VII—VII inFIG. 2;

FIG. 8 is a cross-sectional view thereof taken along the line VIII—VIIIin FIG. 2; and,

FIG. 9 is an illustrative longitudinal cross-sectional view showing thepower transmission coupling in use, with a drive shaft and a drivenshaft being shown in broken lines and forming no part of the claimeddesign.

The ornamental design for a power transmission coupling, as shown anddescribed.